all i kno is the ratio i want is 1.5.1 and my barrel that i want to have is 24in and 3/4 dia... and i want to use a 1.5 dia chamber what length should the chamber be....call me a newb or stupid i never learned ratios i was absent that day of school lol

Yes, as you increase the volume of your chamber, you need to proportionately increase the volume of your barrel (make it longer) to keep the C:B ratio you had before.

Example:

All numbers are made up on the spot because I'm too lazy to figure out volume of a cylinder. I didn't have math last semester.

Let's say you have a 2500cc chamber and a 1660cc barrel, a simple 1.5:1 C:B ratio. If you increase the volume of your chamber to 3000cc, then your barrel would theoretically need to increase in volume to 2000cc to keep your 1.5:1 ratio.